The pricing makes it seem like it's meant more for the couple dozen to couple hundred unit buildings than 7. With 7, you know your neighbors for the most part. With 25, you probably don't, so I imagine theft goes up much more quickly.
I'd have packages delivered 2-3 times a month. In 2.5 years, not a single package was stolen.
My takeaway from this experience is that most humans are decent people. Or that I live in a sufficiently expensive block that nobody has any desire to steal anyone else's stuff.